ATKKBService.exe is common on ASUS laptops. I am unsure of its purpose, but on my system it seems to do something involving hotkeys (and is one of about a billion separate programs that work with the hotkeys). If you have an ASUS computer, go to http://support.asus.com/, select downloads, then choose your computer from the drop-down lists. Download anything that mentions ATK, Keyboard, or Filter Driver. Then uninstall anything with those words from your add/remove programs menu, and re-install them from the files you downloaded. If you do not have an ASUS computer, just uninstall anything with "ATK" in it from the add/remove programs menu.